A device for the preparation of trehalose

Abstract

The utility model relates to the technical field of trehalose preparation, specifically relates to a trehalose preparation device, including protection shell, stirring subassembly and temperature control subassembly, stirring subassembly sets up in the below of protection shell is used for the mixing stirring of a variety of raw materials to trehalose in the preparation process, temperature control subassembly sets up in the above of protection shell and the inside of stirring subassembly is used for the temperature adjustment when the enzyme reaction of trehalose in the preparation process. Compared with prior art, the present application solves the problems of poor mixing effect and temperature control lag of the existing device.

Description

Technical Field

[0001] This utility model relates to the field of trehalose preparation technology, and in particular to a trehalose preparation apparatus. Background Technology

[0002] Trehalose is a safe, stable, and highly moisturizing natural disaccharide with excellent heat resistance and antifreeze properties, and it is widely used in the stabilization of food, pharmaceuticals, cosmetics, and biological agents. The conventional preparation of trehalose mainly relies on enzymatic production, which utilizes trehalose synthases and isomerases to convert starch, starch syrup, or maltose. Enzymatic methods offer advantages such as safety and high selectivity, but they are extremely sensitive to temperature, mixing uniformity, and the stability of the reaction environment, requiring efficient material contact and continuous reaction within a stable temperature range.

[0003] Existing trehalose preparation equipment mostly uses traditional stirred tanks or scraped-wall stirred tanks for mixing and reaction, typically heated by circulating heat medium through a jacketed tank wall. However, these devices suffer from significant heating lag and long temperature transfer paths, resulting in slow heating in the central region of the material and uneven temperature distribution, thus affecting enzyme reaction efficiency. Furthermore, conventional impeller designs are limited in variety, making it difficult to achieve comprehensive axial, radial, and upward flow disturbances, leading to insufficient mixing of raw materials, easy sedimentation and agglomeration, affecting trehalose conversion rates, and failing to meet continuous production requirements.

[0004] In the prior art, Chinese patent document CN222489706U, concerning a trehalose preparation device for anti-aging and cell repair, proposes a method that uses "motor-driven stirring + external annular heating plate for temperature control + push rod mechanism for feeding, scraping, and discharging" to achieve simple stirring, external heating, and solid-liquid separation in the trehalose preparation process, thereby improving preparation efficiency and convenience. However, in practical applications, the above technical solution relies solely on a fixed auxiliary rod for ordinary rotational stirring on a rotating rod, resulting in a simple vortex-type stirring flow field that cannot form an axial + radial composite flow structure, which is not conducive to the thorough mixing of high-viscosity, multi-material systems. Furthermore, the prior art uses an annular heating plate on the outer wall of the stirring tank for heating, requiring heat to be transferred through the tank wall before reaching the material interior. This leads to problems such as heat exchange lag, large temperature gradient, slow temperature rise at the material center, and high energy consumption. Finally, the trehalose enzyme reaction has extremely high temperature requirements, but in the prior art device, stirring is merely stirring and heating is only external heating; the two do not achieve deep spatial and temporal coupling, resulting in insufficiently precise temperature control. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a trehalose preparation device to solve the problems of poor mixing effect and lagging temperature control in existing devices.

[0006] To achieve the above objectives, this utility model provides a trehalose preparation device, including a protective shell, a stirring assembly, and a temperature control assembly. A support column is fixedly installed at the lower center of the protective shell, a base is fixedly installed below the support column, and a stirring tank is fixedly installed above the base on one side of the support column. The stirring assembly is housed inside the stirring tank.

[0007] A stirring assembly, located below the protective shell, is used to mix and stir various raw materials during the preparation of trehalose. It includes a motor, which is fixedly installed below one side of the protective shell. A belt is fitted onto one side of the motor's drive shaft, and a pulley is fitted onto the other end of the belt. A rotating rod is fixedly installed below the pulley. A connecting column is fixedly installed below the protective shell at a position opposite to the rotating rod. A sleeve is fixedly installed on one side of the connecting column, and the sleeve is fitted onto the outer sides of both ends of the rotating rod. A guide block is fixedly installed on one side of the sleeve. A groove is formed in the middle of the guide block, and two sliders are slidably installed in the groove. The guide block is an elliptical plate-like structure. The sliders are accommodated in the groove in the middle of the guide block and cooperate with the groove. A connecting rod is fixedly installed on one side of each slider, and a telescopic rod is fixedly installed on the other end of each connecting rod. One of the two telescopic rods... A first stirring plate is fixedly installed at one end, and a second stirring plate is fixedly connected to one side of the other two telescopic rods. Multiple third stirring plates are fixedly installed on the rotating rod. The first stirring plate is a long, arc-shaped plate that tilts to one side, and the second stirring plate is a short, arc-shaped plate that tilts to the other side. The tilting directions of the first and second stirring plates are opposite. The third stirring plate is a part that is rod-shaped on one side and conical on the other. The fixed end of the telescopic rod is fixed to and connected to the outside of the rotating rod, and the free end of the telescopic rod is fixed to and connected to the first and second stirring plates. The connecting rod is fixed to the side of the free end of the telescopic rod. The device drives the hollow rotating rod to rotate through a motor-belt-pulley, and simultaneously uses a linkage mechanism composed of an elliptical guide block, a slide groove, a slider, a connecting rod, and a telescopic rod to make the first and second stirring plates produce controllable reciprocating extension and angular change movements. The long and short arc-shaped stirring plates have opposite inclinations, supplemented by a third stirring plate on the rotating rod, forming a three-dimensional perturbation flow field of "axial + radial + cyclic lifting". This significantly improves the mixing uniformity of the material, reduces dead zones, avoids agglomeration, and increases the reaction efficiency in the trehalose preparation process. In operation, the motor first drives the hollow rotating rod to rotate via a belt and pulley. The elliptical guide block on its outer side does not rotate synchronously with the rotating rod, causing the slider in the chute to reciprocate periodically with the rotating rod. The slider further pushes the connecting rod and telescopic rod to extend and retract radially, causing the first and second stirring plates to continuously change position and angle, while the third stirring plate rotates synchronously with the rotating rod. The multiple stirring plates, under the combined action of rotation and extension, form a composite flow field, continuously lifting, tumbling, and shearing the material, thereby achieving efficient mixing, preventing sedimentation and agglomeration, and accelerating the uniform fusion of multiple components in the trehalose preparation process.

[0008] A temperature control component, located above the protective shell and inside the stirring component, is used for temperature adjustment during the enzymatic reaction of trehalose preparation. It includes a rotatable air inlet, which is fixedly connected to the top of the protective shell. One side of the rotatable air inlet is connected to an external hot air blower or other air source, and the other side of the rotatable air inlet passes through a pulley and connects to a rotating rod. The rotating rod is a hollow tubular part, and its outer wall is fixedly provided with multiple valve holes, which penetrate the rotating rod and connect to the... The rotating rod is internally interconnected. Multiple valve holes are arranged on the surfaces of both the first and second stirring plates. These valve holes pass through the outer walls of the first and second stirring plates and communicate with the interior of the rotating rod. Each valve hole is a flexible, one-way valve formed by three fan-shaped sections arranged to create a complete circle. The arc-shaped edges of the fan-shaped sections are fixed to the structure, while the corner edges contact each other. The temperature control component introduces hot air into the hollow rotating rod through a rotatable air pipe interface, and the hot air is ejected outward through the valve holes on the rotating rod and stirring plates, achieving direct heating of the stirring structure itself. This "stirring-heating co-source" mode significantly reduces heat exchange lag in the reactor wall, rapidly and uniformly increasing the material temperature, which is beneficial for maintaining the stable temperature range required for the trehalase reaction and improving catalytic efficiency. The valve orifice employs an elastic, one-way valve structure, automatically opening for air jetting under pressure and closing automatically when the machine stops, preventing material backflow and blockage, and improving long-term stability. During operation, the external hot air blower generates hot air that enters the hollow rotating rod through a rotatable air pipe interface and flows along the inside of the rotating rod to multiple stirring plates. The valve orifices on the surfaces of the rotating rod and stirring plates automatically open under internal air pressure, allowing hot air to be evenly released from each stirring surface in a jet manner, providing rapid and uniform heating to the material during simultaneous stirring. Because the valve orifice has a one-way structure, it automatically closes when the air supply stops, preventing material backflow and blockage, thus achieving integrated heating and stirring, improving the temperature stability and efficiency of the trehalase reaction process.

[0009] The hot air passage, stirring drive, and reciprocating mechanism are all integrated into the same rotary rod system, making the overall structure more compact and reducing energy consumption of external heating devices, auxiliary circulating pumps, and other accessories. All power components are housed inside a protective casing, minimizing material adhesion, wear, and corrosion. A rotatable air pipe interface maintains a sealed connection between the air passage and rotating components, ensuring high reliability during dynamic heating and further enhancing the safety and continuous operation capability of the unit in trehalose production.

[0010] The beneficial effects of this utility model are:

[0011] 1. This trehalose preparation device utilizes an electric motor to drive a rotating rod, combined with a mechanical linkage structure consisting of a guide block, slider, connecting rod, and telescopic rod. This achieves the reciprocating extension and angle change of the first and second stirring plates, supplemented by the axial stirring of the third stirring plate. This creates a three-dimensional flow field with superimposed axial, radial, and circulating upward flows, significantly improving mixing uniformity, reducing sedimentation dead zones, and preventing agglomeration. This composite stirring mode enhances the shearing, tumbling, and diffusion between materials, resulting in more complete enzyme reactions and increased reaction rate and trehalose yield. The entire device is compact and highly integrated, suitable for pilot-scale and industrial continuous trehalose production.

[0012] 2. This trehalose preparation device, by setting an airflow channel inside the rotating rod and opening valve holes on the first stirring plate, second stirring plate, and rotating rod, allows hot air to be directly ejected inside the stirring zone, achieving direct heating of the stirring plate surface. This significantly reduces the thermal resistance of traditional jacketed heating, improving the material heating rate and temperature uniformity. The elastic one-way valve hole structure automatically opens when there is air pressure and automatically closes when the machine stops or under back pressure, preventing material from entering the rotating rod and causing blockage, thus improving the reliability and long-term stability of the heating system. Simultaneously, the rotatable gas pipe interface maintains a sealed connection between the gas source and the rotating components, suitable for continuous production, with rapid temperature adjustment response, significantly improving the catalytic efficiency of the trehalose enzyme reaction. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of part of the structure of this utility model;

[0016] Figure 3 This is a three-dimensional schematic diagram of the internal structure of this utility model;

[0017] Figure 4 This is a schematic plan view of the internal structure of this utility model;

[0018] Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 6 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0020] The diagram is marked as follows:

[0021] 1. Protective shell; 2. Rotatable airway interface; 3. Motor; 4. Base; 5. Support column; 6. Mixing tank; 7. Connecting column; 8. Sleeve; 9. Guide block; 10. Rotating rod; 11. First mixing plate; 12. Second mixing plate; 13. Third mixing plate; 14. Sliding block; 15. Connecting rod; 16. Telescopic rod; 17. Valve orifice. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example 1

[0025] like Figures 1 to 5 As shown, a trehalose preparation device includes a protective shell 1, a stirring assembly, and a temperature control assembly. The protective shell 1 is made entirely of corrosion-resistant stainless steel, with a preferred thickness of 2–4 mm, and is used to enclose the power system and provide isolation from the external environment. A support column 5 is fixedly installed at the lower center of the protective shell 1. The support column 5 adopts a square or circular column structure with a wall thickness of not less than 3 mm to ensure the structural stability of the entire machine under operating vibration. The lower end of the support column 5 is fixedly connected to a base 4, which is a rectangular welded steel plate structure, preferably 600 mm × 600 mm in size, to ensure the stability and load-bearing capacity when the equipment is placed.

[0026] A mixing tank 6 is fixedly installed on the base 4 on one side of the support column 5. The mixing tank 6 is made of food-grade stainless steel, with a volume of 10–80L and a wall thickness of 2–3mm to resist the shear force caused by internal stirring. A sealing cover is provided on the top of the mixing tank 6, and the cover is fitted to the protective shell 1 by a sealing ring to ensure that hot air does not leak out during the operation of the temperature control component.

[0027] A stirring assembly is installed inside the stirring tank 6 to achieve strong agitation mixing of different raw materials during the trehalose enzymatic conversion process. The assembly includes a motor 3, which is installed in the upper space of the protective shell 1. The motor 3 has a power rating of 200W–1kW and is used to drive the stirring mechanism continuously. A belt is fitted onto one end of the drive shaft of the motor 3. The belt and pulley adopt a V-shaped structure to improve the power transmission efficiency. A hollow rotating rod 10 is fixedly installed below the pulley. The rotating rod 10 is made of hollow stainless steel tubing with an outer diameter of 25–40mm and a wall thickness of 1.5–3mm, and is rotatably connected to the lower part of the protective shell 1 through a bearing assembly.

[0028] Below the protective shell 1, at the corresponding position of the rotating rod 10, a connecting post 7 is fixedly installed. The connecting post 7 is preferably made of aluminum alloy or stainless steel. A sleeve 8 is fixedly installed on one side of the sleeve 7. The sleeve 8 has a cylindrical structure and is fitted onto the outer sides of both ends of the rotating rod 10. The inner wall of the sleeve 8 maintains a gap of 0.2–0.6 mm with the outer wall of the rotating rod 10 to allow the rotating rod 10 to rotate freely. A guide block 9 is fixedly installed on one side of the sleeve 8. The guide block 9 is an elliptical plate-shaped part with a thickness of preferably 6–10 mm. A groove is opened in the middle of the groove, which extends along the major axis of the ellipse. The width of the groove is approximately 1.2 times the width of the slider 14 to ensure smooth sliding.

[0029] Two sliders 14 are installed inside the chute. The sliders 14 have a square or rounded rectangular structure and form a guiding fit with the chute. A connecting rod 15 is fixedly installed on one side of each slider 14. The connecting rod 15 has a length of 40–100 mm and is used to transfer the sliding displacement to the telescopic rod 16. The telescopic rod 16 can be in the form of a telescopic sleeve or an elastic connecting rod. The inside of the telescopic rod 16 is a metal bellows to ensure dynamic sealing while satisfying hot air flow. The length of the telescopic rod 16 is 60–150 mm, and one end of it is fixedly connected to either a first stirring plate 11 or a second stirring plate 12. The two first stirring plates 11 are both long arc-shaped plates inclined in the same direction, with a length of 100–200 mm. The second stirring plate 12 is a short arc-shaped plate inclined in the opposite direction, with a length of 60–120 mm. The first stirring plates 11 and the second stirring plates 12 are inclined in opposite directions, so that they form a coupling effect of thrusting and reverse disturbance under the telescopic movement, which can create a stronger shear flow field.

[0030] Multiple third stirring plates 13 are installed on the outer wall of the rotating rod 10. The third stirring plate 13 is a composite structure with one side rod-shaped and the other side conical. It is used to generate an upward flow when rotating, so as to transport the material at the bottom of the barrel upward and avoid the formation of dead corners in the sedimentation area.

[0031] During operation, the motor 3 drives the pulley and rotating rod 10 to rotate continuously via a belt. The rotating rod 10 drives the slider 14 to reciprocate periodically along the elliptical groove of the guide block 9, causing the connecting rod 15 and the telescopic rod 16 to undergo radial displacement. This ultimately leads to the extension and retraction of the first stirring plate 11 and the second stirring plate 12, as well as angular adjustment, thereby forming a three-dimensional turbulent flow field inside the mixing tank 6, which consists of superimposed axial circulating flow, radial extrusion flow, and vertical lifting flow. This structure significantly improves the uniformity of material mixing and reduces the temperature and material concentration gradients during the enzyme reaction process.

[0032] Example 2

[0033] like Figures 1 to 6 The present embodiment further illustrates the structure of the temperature control component and its temperature control function based on embodiment one. The temperature control component is located above the protective shell 1 and extends into the interior of the stirring assembly. It includes a rotatable air pipe interface 2, which adopts a rotary sealing structure to maintain a dynamic seal connection with the hot air blower. The rotatable air pipe interface 2 communicates with the internal cavity of the rotating rod 10 and can deliver hot air in the range of 50–120℃ to meet the optimal temperature range for trehalose enzyme reaction. Dry heated air is preferred, and heated inert gas (e.g., heated nitrogen) can be selected for oxygen-sensitive systems. It is not recommended to directly inject high-pressure saturated steam into the valve orifice 17 under normal pressure (low-pressure steam with condensation exhaust design can be used). The design operating temperature is 40–120℃ (for equipment to adapt to different process sections). If it is only an enzyme reaction section, it is recommended to preferably operate in the range of 40–60℃ to protect the activity of commonly used trehalose synthase. The hot air inlet is recommended to have an adjustable operating pressure range of 0.5–5.0 kPa (gauge) (equivalent to 500–5000 Pa), and the recommended common operating pressure is 0.5–2.0 kPa. The opening pressure of valve orifice 17 (0.5–1.2 kPa) should be less than the air supply pressure, and a certain pressure margin should be reserved to form a stable jet.

[0034] The rotating rod 10 forms a main hot air channel inside, with a smooth inner surface to reduce air resistance. Multiple valve holes 17 are circumferentially formed on the outer wall of the rotating rod 10, ranging from 8 to 24. Each valve hole 17 is composed of a three-lobed elastic plate. The arc edges of the three fan-shaped plates are fixed to the outer wall of the rotating rod 10, and the corner edges contact each other to form a self-closing one-way valve structure. The elastic valves (per valve) of the valve holes 17 are made of food-grade silicone rubber (VMQ, Shore A60±5) or food-grade fluororubber (FKM / Viton; for high-temperature / chemical-resistant applications), preferably FDA / USP certified grades. Silicone rubber performs well at 40–120℃ and has good elasticity; FKM is used for applications requiring higher temperature resistance or containing corrosive gases. The thickness of a single fan-shaped plate ranges from 0.4–1.0 mm (preferably 0.5 mm). The thickness determines the opening / recovery force and lifespan; 0.4–1.0 mm provides both easy opening and sufficient lifespan under low-pressure blowing. The nominal orifice diameter (circular equivalent) of the valve orifice 17 is 2.0–6.0 mm (preferably 3.0–5.0 mm) to avoid easy clogging due to an excessively small orifice diameter, while an excessively large orifice diameter would affect the refinement of local jetting and valve strength. The opening differential pressure range of a single valve orifice 17 is 0.3–2.0 kPa (approximately 30–200 Pa), with a recommended design target of 0.5–1.2 kPa (approximately 0.005–0.012 MPa). This opening pressure can be adjusted by the material thickness / valve size. It is matched with the output of common blowers / fans (0.5–5 kPa) to ensure that the air supply can open the valve and automatically close it to prevent backflow when the air supply stops. When not in the open state (less than 0.1 × opening pressure), the permissible leakage of a single orifice is ≤0.1 L / min (or the total leakage of all valves in the entire device is ≤0.5 L / min, depending on the specific number). The dynamic opening / closing cycle life of the elastic valve at the operating temperature is ≥50,000 cycles (preferably ≥100,000 cycles).

[0035] Multiple valve holes 17 are also formed on the surfaces of the first stirring plate 11 and the second stirring plate 12. These valve holes 17 are connected to the interior of the rotating rod 10, allowing hot air to be directly injected into the material during the stirring motion. During operation, when the hot air blower delivers air, the air pressure pushes the valve holes 17 to open, and hot air is ejected from different angles. Because the stirring plate is constantly changing position, the injected hot gas can form a dynamic circulating temperature field inside the material, making the temperature distribution of the reaction system more uniform, significantly reducing heating lag, and improving the enzyme reaction rate. It is recommended that the outlet direction of the valve orifice 17 be deflected outwards by 15°–30° relative to the surface of the stirring plate (outer inclination), and slightly tilted backwards by 5°–15° along the arc (forming a tangential component). The outward tilt helps to blow the hot gas towards the center of the container rather than directly onto the wall, while the backward tilt generates a tangential component that, combined with stirring, forms a complex flow field, improving temperature uniformity and reducing localized overheating caused by direct blowing. It is recommended to use two or three staggered rows (10–30 mm apart longitudinally) on the stirring plates 11 / 12 to form a uniform longitudinal temperature distribution. The holes on the rotating rod 10 can be arranged spirally or symmetrically to facilitate airflow distribution along the axial and circumferential directions.

[0036] When the air supply stops, the valve orifice 17 automatically closes to prevent material from flowing back into the rotor 10, improving the long-term stability of the internal structure and reducing the cleaning burden. The entire heating process uses both "internal heating" and "simultaneous heating with stirring" to avoid the temperature difference problem caused by the long heat transfer path in traditional jacket heating.

[0037] Example 3

[0038] like Figures 1 to 6 As shown in the figure, this embodiment further illustrates the structural advantages of this utility model in continuous production and equipment maintenance. Since the hot air channel, stirring transmission, and reciprocating mechanism are all integrated into the rotating rod 10, the equipment is more compact, and the protective shell 1 can effectively isolate the power components from the material contact area, reducing the corrosion and wear of the mechanical components by the material.

[0039] The fixing method of the sleeve 8 keeps the guide block 9 stationary, while the rotating rod 10 rotates around it, causing a relative motion with a defined trajectory between the chute and the slider 14. This not only ensures the periodic extension and retraction of the stirring blades but also enables complex movements without additional power, reducing energy consumption. The third stirring plate 13 continuously lifts the material deposited at the bottom of the tank, making the overall mixing more thorough and avoiding uneven reaction caused by localized material deposition.

[0040] The interior of the mixing tank 6 can be mirror-polished to reduce material adhesion and improve cleaning efficiency. The arc-shaped structure of the first stirring plate 11 and the second stirring plate 12 can scrape the material near the tank wall during extension and retraction, further preventing sticking. Combined with internal hot air jetting, it can effectively prevent caramelization and clumping of high-viscosity syrup systems, making the device particularly suitable for maintaining a high stable temperature range required during the enzymatic reaction of trehalose.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0042] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trehalose preparation apparatus, characterized in that, include: Protective shell (1), stirring assembly and temperature control assembly; A stirring assembly, located below the protective shell (1), is used to mix and stir various raw materials during the preparation of trehalose. It includes a rotating rod (10), which is rotatably mounted below the protective shell (1). A connecting column (7) is fixedly installed below the protective shell (1) at a position opposite to the rotating rod (10). A sleeve (8) is fixedly installed on one side of the connecting column (7), and the sleeve (8) is fitted over both ends of the rotating rod (10). A guide is fixedly installed on one side of the sleeve (8). Block (9), the guide block (9) has a groove in the middle, two sliders (14) are slidably installed in the groove, a connecting rod (15) is fixedly installed on one side of each slider (14), a telescopic rod (16) is fixedly installed on the other end of each connecting rod (15), a first stirring plate (11) is fixedly installed on one end of two telescopic rods (16), a second stirring plate (12) is fixedly connected to one side of the other two telescopic rods (16), and a plurality of third stirring plates (13) are fixedly installed on the rotating rod (10); A temperature control component is located inside the stirring component below the protective shell (1) and is used to adjust the temperature during the enzymatic reaction of trehalose during preparation. It includes a rotatable tracheal port (2), which is fixedly connected to the top of the protective shell (1). The other end of the rotatable tracheal port (2) is connected to the rotating rod (10). The outer wall of the rotating rod (10) is fixedly provided with multiple valve holes (17). The valve holes (17) penetrate the rotating rod (10) and are connected to the interior of the rotating rod (10). Multiple valve holes (17) are arranged on the surfaces of the first stirring plate (11) and the second stirring plate (12).

2. The trehalose preparation apparatus according to claim 1, characterized in that, An electric motor (3) is fixedly installed below the protective shell (1). A belt is fitted on one side of the drive shaft of the electric motor (3), and a pulley is fitted on the other end of the belt. The pulley is fixed to the rotating rod (10) below.

3. The trehalose preparation apparatus according to claim 2, characterized in that, One side of the rotatable air pipe interface (2) is connected to an external hot air blower or hot fluid, and the other side of the rotatable air pipe interface (2) is connected to the rotating rod (10) through a pulley. The rotating rod (10) is a hollow tubular part in the middle. The valve hole (17) passes through the outer wall of the first stirring plate (11) and the second stirring plate (12) and is connected to the inside of the rotating rod (10).

4. The trehalose preparation apparatus according to claim 2, characterized in that, The first stirring plate (11) is a long arc-shaped plate that is inclined to one side, the second stirring plate (12) is a short arc-shaped plate that is inclined to the other side, the first stirring plate (11) and the second stirring plate (12) are inclined in opposite directions, and the third stirring plate (13) is a part that is rod-shaped on one side and conical on the other side.

5. The trehalose preparation apparatus according to claim 3, characterized in that, The valve orifice (17) is a one-way valve with three elastic fan-shaped parts pieced together to form a complete circle. The arc-shaped edges of the fan-shaped parts are fixed to the structure, and the angular edges are in contact with each other.

6. The trehalose preparation apparatus according to claim 2, characterized in that, The guide block (9) is an elliptical plate structure, and the slider (14) is accommodated in a groove opened in the middle of the guide block (9) and used in conjunction with the groove.

7. The trehalose preparation apparatus according to claim 3, characterized in that, The fixed end of the telescopic rod (16) is fixed to and connected to the outside of the rotating rod (10), the free end of the telescopic rod (16) is fixed to and connected to the first stirring plate (11) and the second stirring plate (12), and the connecting rod (15) is fixed to the side of the free end of the telescopic rod (16).

8. The trehalose preparation apparatus according to claim 1, characterized in that, A support column (5) is fixedly installed at the lower center of the protective shell (1), a base (4) is fixedly installed below the support column (5), and a stirring tank (6) is fixedly installed above the base (4) on one side of the support column (5). The stirring assembly is housed inside the stirring tank (6).

Images